Abstract

Advances in materials for solar energy utilization have the potential to produce large performance improvements (both present and future concepts) in use of solar energy or conservation. Because approximately one-third of the total national energy budget is consumed by buildings, solar and conservation improvements can have a large effect on our overall energy consumption. There have been a large number of materials research programs funded through the Department of Energy (DOE) in an attempt to expand the use of solar energy. These materials programs have covered the areas of sealants and gaskets, insulations, glazings, glazing- surface treatments, polymers, selective absorber surfaces, phase-change storage, and heat mirrors. In addition to developing the materials, a large effort has been directed toward determining the reliability and durability of solar materials. The present state-of-the-art and status of these solar materials will be discussed. Although much progress has been made in recent years, many improvements are still needed. For many of the more routine materials, simple cost reductions or durability improvements would suffice. For the more advanced concepts of controlling energy flow into or out of buildings, basic materials research remains a necessity. There are a large number of potentially viable concepts that appear promising, but which have not yet been developed into usable materials.

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